23results about "Needle severing devices" patented technology

This invention relates to the field of collection device technology, and more particularly to an automatic thread cutting and collection device for a sewing machine. The device includes a base plate and a servo cylinder. A pushing component is installed at the rear end of the servo cylinder, a supporting and limiting component is installed on the outside of the pushing component, a thread guide component is installed on the inside of the pushing component, a cutting component is installed at the rear end of the thread guide component, an air blowing component is installed at the upper end of the base plate, and a thread guiding component is installed at the bottom end of the thread guide component. The pushing component includes a movable cylinder with a movable hole and a first limiting groove on its inner side. The thread guide component includes a cylindrical shell with a thread passage on its inner side, and a thread inlet hole and a conical groove near the rear end of the cylindrical shell. In this invention, the device can effectively improve the problem of thread length fluctuation during thread cutting in a sewing machine, keeping the thread in a straight and taut state, accurately controlling the thread cutting length, improving cutting consistency, optimizing the appearance of the sewn part, and ensuring processing quality. Simultaneously, the operator does not need to cut the thread, thus increasing the sewing speed.

The present invention comprises: a needle; a needle plate that supports a fabric from below and has a needle drop through which the vertically moving needle penetrates; a looper that reciprocates below the needle plate while holding a looper thread so as to intertwine the looper thread with a needle thread; and a knife part that moves between the needle plate and the looper, and cuts the needle thread and the looper thread connected to the fabric after sewing. The knife part can change, with respect to the needle plate, a cutting position at which the needle thread and the looper thread are cut. Between the needle plate and the looper, a space in which the knife part in a posture before cutting in the position changed state can be disposed is secured.

The utility model provides a kind of thread cutting device for sewing machine, including sewing machine pedestal, thread cutting assembly and drive assembly, thread cutting assembly includes the thread cutting installation shaft being set on sewing machine pedestal, thread cutting knife rest is rotatably set in the front end of thread cutting installation shaft, drive assembly includes the drive installation shaft being set on sewing machine pedestal, motor is set on sewing machine pedestal, gear transmission mechanism connecting drive installation shaft and motor, connecting drive installation shaft and thread cutting knife rest's crank link mechanism.When using, motor drives drive installation shaft circumferential rotation by gear transmission mechanism, drive installation shaft drives thread cutting knife rest circumferential rotation shaft by crank link mechanism, to complete thread cutting.Motor is used as driving power, gear transmission mechanism and crank link mechanism are used to drive thread cutting knife rest rotation, so that the parts used in the above thread cutting device can be reduced, and the device has the advantage of not prone to failure.

To provide an empty stitch cutter preventing an empty stitch such as a hollow ring from being erroneously cut.SOLUTION: An empty stitch cutter 30 for cutting an empty stitch 2 formed by a sewing machine 1 has a stationary blade 40, a movable blade 50 that moves so as to come close to or away from the stationary blade 40, a motor 90 that drives the movable blade 50 to move the movable blade 50, a foreign matter detector for detecting a foreign matter 3 existing on a track of the movable blade 50, and a controller 200 that stops the motor 90 when the foreign matter 3 is detected by the foreign material detector.SELECTED DRAWING: Figure 3

The utility model provides a kind of inner wire machine, mainly with sewing body and rocker body, sewing body is equipped with upper shaft and cutter driving mechanism, and rocker body is equipped with cutter mechanism, in addition, cutter mechanism has movable cutter, ring gear, two cutter transmission rods, linkage bevel gear and cutter relay gear, ring gear is rotatably connected in the bearing seat of sewing body, and the peripheral tooth part of ring gear is engaged in cutter driving mechanism, in addition, two cutter transmission rods are connected with each other, one of cutter transmission rods is connected linkage bevel gear to engage in the end surface tooth part of ring gear, and another cutter transmission rod is connected cutter relay gear to be connected in movable cutter, whereby, the inner wire machine of the case is driven movable cutter by upper shaft, avoid the need for additional installation electric control device to drive movable cutter.

We provide a sewing machine that allows for flexible adjustment of the thread cutting position. [Solution] The invention provides a needle 2, a needle plate 3 that supports the fabric from below and has a needle drop 31 through which the vertically moving needle 2 passes, a looper 4 located below the needle plate 3 that holds the looper thread and moves back and forth to entangle the looper thread with the needle thread, and a female part 55 that moves between the needle plate 3 and the looper 4 to cut the needle thread and the looper thread that are connected to the fabric after sewing. The female part 55 is capable of changing the cutting position relative to the needle plate 3, and a space is provided between the needle plate 3 and the looper 4 in which the female part 55 can be positioned in the changed position, in the posture before cutting.

This utility model discloses a flat blade thread cutting adjustment mechanism and a template machine, relating to the field of template machine technology. To solve the problem of the flat blade thread cutting device's inability to accurately separate and hook threads, the flat blade thread cutting adjustment mechanism includes a base, a flat blade thread cutting device, and an eccentric sleeve. The flat blade thread cutting device is located on the base, and the moving blade of the device is rotatably connected to the base via a moving blade rod. The eccentric sleeve is located at the end of the moving blade rod away from the moving blade and is used to adjust the distance between the moving blade and the needle. This configuration allows for flexible adjustment of the distance between the moving blade and the needle according to different sewing needs and thread characteristics, enabling the moving blade to accurately perform thread separation and hooking operations, thereby improving the success rate of thread cutting.

The utility model belongs to sewing machine technical field, concretely relates to a sewing machine with upper differential, lift presser foot, cut thread and adjust needle spacing mechanism, including machine body and base, motor one is provided with output shaft one, and the one end of output shaft one projects motor one and is installed lift presser foot cam and differential feeding cam respectively, and lift presser foot cam is used for controlling lift presser foot mechanism, and differential feeding cam is used for controlling upper differential feeding mechanism, motor two is provided with output shaft two, and the both ends of output shaft two project motor two and are installed cut thread cam and needle spacing adjusting cam respectively, and cut thread cam is used for controlling cut thread mechanism, and needle spacing adjusting cam is used for controlling needle spacing adjusting mechanism, the utility model discloses through motor one to control the work of lift presser foot mechanism and upper differential feeding mechanism respectively, through motor two to control the work of cut thread mechanism and needle spacing adjusting mechanism respectively, and through motor control can realize the synchronous operation between each mechanism, convenient operation, simple structure.

This utility model relates to the field of garment processing and discloses an automatic thread-cutting device for a flatlock sewing machine. It includes a base and a flatlock sewing machine body for garment processing, fixedly connected to the top of the base. A cover is fixedly connected to one side of the flatlock sewing machine body. A dust-collecting mechanism is provided between the cover and the flatlock sewing machine body. A thread-cutting mechanism is provided on the cover, comprising two thread-cutting blades. The dust-collecting mechanism includes a fan blade rotatably disposed within the cover and two dust-collecting covers fixedly connected to the cover. This utility model has the following advantages and effects: it eliminates the need for manual thread cutting, improving production efficiency and reducing labor intensity. The coordinated cutting of the two thread-cutting blades ensures uniform thread cutting position and controllable thread length, improving sewing quality. It eliminates the safety hazards of manual use of scissors, and its simple structure and convenient maintenance facilitate the removal of thread ends, lint, dust, and other impurities, ensuring garment production quality.

This utility model discloses a motor-controlled thread-cutting structure, comprising a platform, a base, a flat blade, and a movable rod. The platform is located on the sewing machine, and the base is fixed to the inner side of the platform. The flat blade is rotatably connected to the platform and is connected to a liner. The movable rod rotates through the base, and the base is equipped with a power motor and a pad. A guide rod is movably inserted through the pad. The power motor is connected to the guide rod through a transmission assembly. The upper end of the guide rod is connected to the rear end of the movable rod through a first traction rod to drive the movable rod to reciprocate. A second traction rod is provided at the rear end of the movable rod, and the second traction rod extends and is hinged to a pull rod, which extends and is hinged to the liner. The power motor drives the flat blade to move through the transmission assembly and the movable rod, resulting in a large thread-cutting force. The thread-cutting signal is no longer affected by the lower shaft and cylinder of the sewing machine. The power motor is controlled independently, resulting in good stability and a good thread-cutting effect.

This invention provides a bobbin thread cutting and differential adjustment device for flatlock sewing machines that eliminates the need for manual adjustment of the differential ratio, which is time-consuming and lacks accurate reproducibility compared to conventional methods, and the need for increased manufacturing costs and complex control when adding new drive components. [Solution] The bobbin cutting and differential adjustment device comprises a single drive motor 70, a bobbin cutting drive member 7 that drives a cutter drive lever 30 in conjunction with the drive motor 70, a differential ratio adjustment member 6 that drives a differential ratio adjustment lever 23 in conjunction with the drive motor 70, and a control device for the drive motor 70. This allows bobbin cutting and differential adjustment to be performed with a single drive device, suppressing cost increases and control complexity, while reducing the number of steps required for differential ratio adjustment and achieving accurate reproducibility.

The utility model discloses efficient clothing processing sewing equipment, which relates to the technical field of clothing processing and comprises a machine base, a sewing machine main body is arranged on the machine base, and bumps are fixedly connected to the front side and the rear side of the sewing machine main body. By means of the arranged cutting assembly, an operator can press the knife rest to move downwards when needing to cut a connecting line, the sewing line to be cut is located under the cutting knife, cutting can be achieved, after cutting operation is completed, the operator loosens the hand, the knife rest is reset under the action of the spring, sewing of the next piece of clothes can be prevented from being blocked, operation is simple, and practicability is high. The time for cutting off the sewing thread is shortened, and the sewing efficiency is improved. According to the cutting-off assembly, a cutting-off tool can be protected when not used, the human hands are prevented from being cut, meanwhile, a protection frame can be moved away when cutting-off is needed, the cutting-off tool is prevented from being blocked, and the safety of the equipment in the using process is high.

The utility model relates to a kind of thread trimming mechanism suitable for multi-head embroidery machine.It relates to the technical field of embroidery machine.The application specifically includes at least two thread trimming devices arranged on shuttle box body, corresponding the thread trimming of at least two double needle heads;Thread trimming device includes first needle thread trimming assembly, second needle thread trimming assembly and thread trimming fixed plate, first needle thread trimming assembly is arranged on the beam of shuttle box body, second needle thread trimming assembly is arranged on thread trimming fixed plate.The thread trimming fixed plate of the utility model is fixedly connected with shuttle box body, when being set on one side of middle connecting groove, when second needle thread trimming assembly is set on thread trimming fixed plate, avoid the position where middle connecting groove is, so it will not interfere with middle connecting piece, so as to ensure that the thread trimming mechanism can normally cut thread, and further reduce the distance between heads, so that multi-head embroidery machine can realize higher density embroidery, improve embroidery quality.

The present application belongs to the technical field of sewing machines, and relates to a sewing machine thread trimming control system based on multiple light eyes, which comprises, arranged in sequence along the cloth feeding direction of the sewing machine: a first light eye for presser foot lifting control; a second light eye and a third light eye for combined control of pre-thread trimming; and the following control logic is adopted when the pre-thread is trimmed: when the cloth front edge blocks the second light eye, the controller starts timing T1; when the cloth front edge blocks the third light eye, the controller ends T1 timing and simultaneously starts timing T2; the controller judges whether the inequality T2>X*T1-Y is established according to preset parameters X and Y; when the inequality is established, the controller outputs a thread trimming signal to drive the scissors to perform a trimming action; wherein parameter X is a constant, and parameter Y is a time offset based on the response lag time of the equipment. The sewing machine thread trimming control system based on multiple light eyes provided by the present application can solve the problem of unstable thread trimming length caused by changes in actual sewing conditions.

This utility model discloses a thread-cutting structure for a sewing machine motor, relating to the field of sewing machines. It includes an assembly panel, with a motor connected to the bottom of the assembly panel. The motor's output shaft passes through the assembly panel and is connected to a connecting rod. A sliding module is provided on the top surface of the assembly panel. The sliding module, in conjunction with the connecting rod, converts the rotational motion of the motor into linear motion. A fixed blade is mounted at the front end of the sliding module, and a moving blade is connected to the movable end of the sliding module. This utility model uses a motor to drive the connecting rod to swing, and the swinging connecting rod drives the movable end of the sliding module to perform linear reciprocating motion, thereby causing the moving blade to perform reciprocating linear motion. Then, in conjunction with the fixed blade, it completes the thread cutting process. By using a connecting rod and sliding module instead of a cam structure and multiple shafts, the transmission structure is simplified, improving the speed of transmission response of each component and the stability of the thread-cutting structure, while also facilitating subsequent disassembly and maintenance.

The present application relates to a kind of precision guiding nest-preventing device and nest-preventing method integrated in sewing machine needle plate, the device is provided with fixed knife and movable knife on the lower surface of sewing machine large needle plate, the movable knife includes hooking part, dividing part, wire container groove and wire hole, cooperates with presser foot, blowing and suction pipe and connecting rod type driving mechanism, through the timing design of "stitching thread - guiding presser - stabilizing thread loop - cutting cleaning - resetting", realizes the precise guidance of thread end, cutting and cleaning.The device can reuse the built-in power of sewing machine, has compact structure and strong adaptability, can completely avoid the winding of starting thread, improve the quality and operation continuity of sewing product, and is suitable for all kinds of sewing machines such as lockstitch machine and pattern machine.

The utility model discloses a computer jujube beating vehicle for clothing processing relates to computer jujube beating vehicle technical field, and it includes support seat, and one end support seat top is installed with beating jujube machine subassembly through bolt, and beating jujube machine subassembly outside is provided with cutting thread mechanism, and the other end support seat top is provided with controller, beating jujube machine subassembly includes frame, beating jujube machine body, beating jujube needle, limit frame, extension seat, and frame is located support seat top, and frame top fixed mounting has beating jujube machine body, and beating jujube machine body bottom is provided with beating jujube needle, and beating jujube needle outside is provided with telescopic limit frame, and frame side is fixedly connected with extension seat, and extension seat inside is provided with feeding and discharging clamping mechanism, the utility model discloses through the installation automatic cutting thread and automatic clamping cloth function, has improved production efficiency and product quality greatly, has reduced manual cost and operating error effectively.

The application provides a sewing machine thread starting and preventing thread dropping structure and a sewing machine. The sewing machine thread starting and preventing thread dropping structure is used for cooperating with a thread cutting mechanism of the sewing machine to prevent thread dropping when starting sewing. The thread cutting mechanism has a first thread cutting knife for hooking thread movement and cutting thread. The sewing machine thread starting and preventing thread dropping structure comprises a clamping assembly, a thread passing notch and a first clamping part provided on the first thread cutting knife. The thread passing notch is used for the needle to pass through when the first thread cutting knife moves to a thread starting initial position of the lower side of the needle of the sewing machine. The first clamping part is provided on the side of the thread passing notch. The clamping assembly is provided with a second clamping part. The second clamping part is located on the path of the thread passing notch and the first clamping part when the first thread cutting knife moves. When the first thread cutting knife moves from the thread starting initial position to the clamping assembly, the thread passing notch can drive the thread in the thread passing notch to the second clamping part, and the thread is clamped between the first clamping part and the second clamping part.

The utility model discloses a kind of double needle strip overlock machines, belong to overlock machine technical field, including base, casing, the casing is fixedly arranged at base top, the base top edge is fixedly provided with needle plate, the needle plate top is provided with presser foot, the casing inside is provided with the presser foot handle component for driving the lifting of presser foot, the casing inside is provided with double needle drive assembly, the casing outer end is provided with the double needle head opposite up and down with the presser foot and needle plate, the double needle drive assembly is used to drive the synchronous movement of the double needle head, the casing outer end side edge is provided with the thread cutting component for cutting line, the base inside is provided with the feeding assembly for feeding cloth, the utility model changes double needle overedge interval position, so that the overall clothing overedge is made smaller, wear more comfortable, while reducing the production cost of clothing overedge width reduction cloth waste reduction.

The application relates to the technical field of sewing off thread ends, and discloses a musical instrument bag sewing off thread end device, which comprises a connecting ring, the outer side of the connecting ring is rotationally connected with two transmission frames, recessed holes are arranged on the opposite sides of the two transmission frames, triangular blades are fixedly connected to the opposite sides of the two transmission frames, the two triangular blades are symmetrically and staggeredly distributed, an arc-shaped elastic sheet is fixedly connected to the inner walls of the two recessed holes, in the application, the triangular blades are arranged, the transmission frames are manually gripped to move and adjust the positions, when the two triangular blades are moved to the two sides of the thread ends to be cut, the two transmission frames are pinched to move close to each other, at the moment, the two triangular blades can cut the thread ends, in the process of cutting the thread ends, contact with the joints of the hands is avoided, thus, discomfort is avoided, and the application is beneficial to be widely used.

A method for producing a smart textile includes stitching with a conductive thread from a first point outside a segmented area that is set on a sheet material toward a second point on the segmented area. An embroidery with the conductive thread is sewn from the second point as a starting point to apply a segment in the segmented area. These series of steps are executed without performing a process for cutting the conductive thread by stopping the sewing process of the conductive thread.